0
$\begingroup$

We found this in Romania, far away from water basins.

enter image description here enter image description here enter image description here enter image description here enter image description here

$\endgroup$

closed as off-topic by Universal_learner, arkaia, Fred, Ash, Jan Doggen Jul 11 at 7:10

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Please review our rock identification guidelines to provide the missing information so that your question is both answerable and useful to new users." – Universal_learner, arkaia, Fred, Ash, Jan Doggen
If this question can be reworded to fit the rules in the help center, please edit the question.

1
$\begingroup$

Based on outward appearance I'd say Agate, but it could also be Calcite, a little vinegar can be used for a reactivity test, if it bubbles when introduced to the surface then you have calcite otherwise you'd be well advised to do a scratch test in case you have something really different be I'd say Agate.

$\endgroup$

Not the answer you're looking for? Browse other questions tagged or ask your own question.